1   /**
2    * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3    *
4    *
5    *
6    *
7    * The contents of this file are subject to the terms of the Liferay Enterprise
8    * Subscription License ("License"). You may not use this file except in
9    * compliance with the License. You can obtain a copy of the License by
10   * contacting Liferay, Inc. See the License for the specific language governing
11   * permissions and limitations under the License, including but not limited to
12   * distribution rights of the Software.
13   *
14   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20   * SOFTWARE.
21   */
22  
23  package com.liferay.portal.kernel.search;
24  
25  import java.util.ArrayList;
26  import java.util.Comparator;
27  import java.util.List;
28  
29  /**
30   * <a href="DocumentComparator.java.html"><b><i>View Source</i></b></a>
31   *
32   * @author Brian Wing Shun Chan
33   */
34  public class DocumentComparator implements Comparator<Document> {
35  
36      public DocumentComparator() {
37          this(true, false);
38      }
39  
40      public DocumentComparator(boolean asc, boolean caseSensitive) {
41          _asc = asc;
42          _caseSensitive = caseSensitive;
43      }
44  
45      public void addOrderBy(String name) {
46          addOrderBy(name, _asc, _caseSensitive);
47      }
48  
49      public void addOrderBy(String name, boolean asc, boolean caseSensitive) {
50          DocumentComparatorOrderBy orderBy = new DocumentComparatorOrderBy(
51              name, asc, caseSensitive);
52  
53          _columns.add(orderBy);
54      }
55  
56      public int compare(Document doc1, Document doc2) {
57          for (DocumentComparatorOrderBy orderBy : _columns) {
58              String value1 = doc1.get(orderBy.getName());
59              String value2 = doc2.get(orderBy.getName());
60  
61              if (!orderBy.isAsc()) {
62                  String temp = value1;
63  
64                  value1 = value2;
65                  value2 = temp;
66              }
67  
68              int result = 0;
69  
70              if ((value1 != null) && (value2 != null)) {
71                  if (orderBy.isCaseSensitive()) {
72                      result = value1.compareTo(value2);
73                  }
74                  else {
75                      result = value1.compareToIgnoreCase(value2);
76                  }
77              }
78  
79              if (result != 0) {
80                  return result;
81              }
82          }
83  
84          return 0;
85      }
86  
87      private boolean _asc;
88      private boolean _caseSensitive;
89      private List<DocumentComparatorOrderBy> _columns =
90          new ArrayList<DocumentComparatorOrderBy>();
91  
92  }